The Earth is ________ home. We must take care of it. We should keep the land, air and water ________. But people on Earth have made a lot of pollution since they could first burn things ________ a fire. They ________ washed in the river and threw away rubbish on the ground. Many years ago, pollution was not so serious because there ________ not so many people.

There was enough clean air, land and water long time ago. ________ the land or water was dirty in one place, people moved to another place. People now, however, are slowly ________ the whole world and there is not enough clean air, land or water.

Perhaps you are afraid ________ is endless(无止境的) for people to make pollution. Luckily, we are glad to tell you that people begin to know the danger of pollution. ________ more and more people are working hard to protect our Earth. We hope one day all the people in the world can enjoy ________ in the clean environment.

Ted lives in a big city. Today he’s very happy,because it’s the   ________ day of school. Ted likes to go back to school. He wants to   ________ his friends. He is going to meet his new ________.

Ted gets up ________ in the morning. He washes his face and brushes his teeth, and then ________ his new clothes. It’s 7:30. Look! He is having ________ with his parents. Now, he is ready for ________.

He goes to school by bike. He ________ his friends outside the school gate. They are talking about something ________.They all like going to school. Then the bell rings. Everyone ________ to his or her classroom quickly.

From Monday to Friday American students usually get up at seven. After breakfast they go to school on foot or take the school bus to school. Some students go to school by bike. They get to school at around half past eight. They have different classes in different classrooms.

American students often have lunch at school. They go back to classes after lunch. They can go home after 3 o’clock.

American students usually play or watch TV before dinner. After dinner they do their homework. Sometimes they play or talk with their parents.

On weekends American students often have a big dinner at home with their family.

We live on Earth. It’s our home. But how much do you know about it? Let me tell you something about our Earth.          

The Earth is like a huge ball. Like the other seven planets(行星), the Earth is running around the sun. It’s the third nearest one to the sun. It takes the Earth about 365 days to run around the sun. At the same time, the Earth is going around itself. If you are in space(太空), you can see lots of white clouds over the surface(表面) of the Earth. Through the clouds, you can see the blue colour of the oceans, and the brown colour of the land. About 70% of the Earth is covered(覆盖) with water. Why do we have day and night? When the half of the Earth is facing the sun, it’s daytime. As the Earth turns, and this half is away from the sun, night is coming. And it’s daytime for the other half.